Method of making paper boxes



Oct. 19 1926.

L. E. LA BOMBARD ET AL METHOD OF MAKING PAPER BOXES Filed Nov. 1925 //vTURSL zm/vf. A A 547mm HAL /;ZL w/v hi .5705 50 THAN 5 Fig.4.

Patented Oct. 19, 1926.

UNITED STATES 1,603,547 PATENT OFFICE.

LEON E. LA BOMBARD AND MELVIN SIDEBOTI-IAM, OF CHELSEA, MASSACHUSETTS,

ASSIGNORS T0 SPECIALTY AUTOMATIC MACHINE COMPANY, OFCHELSEA, MASSA-CHUSETTS, A CORPORATION OF MASSACHUSETTS. I

METHOD OF MAKING PAPER BOXES.

Application filed November 23, 1925. Seria1 No. 70,774.

overlapping portions or scctions together.

And it has been customary to so make boxes which are used to containeggs.

Owing to the fact that the glued parts are liable to separate whensubjected to a damp atmosphere, as when boxes of eggs are inrefrigerators, it is desirable to employ metallic fastenings such aswire staples instead of glue. i

It has been proposed to fold the box blanks to the approximate formwhich they will have when the boxes are completed, then partly or whollyset them up, then drive staples through those overlapping sections whichrequire to be connected, and

then collapse the boxes to flat condition for storage or shipment. Thishowever is a slow operation and is difiicult to perform by machinery. Sofar as we are aware metallic fastenings have not heretofore beenemployed to unite overlapped portions during the operation of foldingthe blanks or after the boxes are completed and while they are in flatfolded condition. This because there are other overlapping portionswhich must not be connected together, with those which are connectedtogether.

The object of our invention is to provide, in an economical manner,paper boxes having metallic fastenings instead of adhesive,-

and we accomplish this object by successfully applying the fasteningsafter and while the blanks are completely folded to their final flatform for shipment, without having to partly unfold the blanks to getaccess to those parts which are to be socured together. In attainingthis object we provide the flat blanks with small holes or openings incertain portions thereof which are never secured together, then foldingthe blanks in such manner that the holes register with each other, andthen applying metallic fastenings through those portions which have noholes, in the locations exposed by the said holes.

The folding can be done manually but preferably we employ a machine suchas illustrated in Letters Patent No. 1,488,756, is-

sued to us April 1, 1924, Figures 14 to 20 of which illustrate the typeof glued box here inbefore referred to.

The prez'ent invention consists in the method of making the-box,substantially as hereinafter described and claimed.

Of the accompanying drawings:

- Figure 1- is a plan view of one form of blank utilized in carrying outour inven tion.

Figures 2 and 3 are opposite plan views of one end portion of'a similarblank which has been folded flat and the necessary sections securedtogether by staples.

Figure 4 represents a section on line 4-4 of Figure Figure 5 is aperspective view of one end of the box in nearly set up condition.

' Similar reference characters indicate Sim-- ilar parts or features inall of the views.

Referring first to Figure 1, the blank is cut and creased to provide abottom section a, front and rear wall sections 6, c, a cover section (1having a tucking flap e, and end wall sections 7, g, h. The blank isfolded in the manner illustrated by the other figures of the drawing,detailed description of the order in whichthe different sections arefolded being unnecessary because said order forms no part of ourpresentinvention and is, moreover, well-known.

An important feature of the invention is that holes or slots in areprovided in certain portions'of the blank. These are-conveniently. madewhen the blank is died out. They are in such locations of those sectionswhich, when the blank is folded to box form,

are not themselves secured to ether butoverlap other intermediatesections which are secured together, in order to expose to the action ofthe tool or implement which applies staples y those t n-perforatedintermediate sections which areto be secured together. In theillustrated embodiment of the" invention, the holes w are centrallylocated in the ends of the bottom section a, and in such locations ofthe sections a and g that when the blank is folded the holes will be inalinement, or will register, as illustrated by Figures 2, 3 and 4-. Theother sections 7 and 7:. however, and a portion of section g, are thenbetween or are over lapped by the portions having the holes, and.

a staple-applying element and a clinching element are readily adapted tofasten together those three (Fig. 4). c

From the above description and the drawings, it will be understood thatthe blank, having holes or slots such as illustrated, is so folded thatthe holes or slots register to permit a stapling tool to get access tointermediate sections to staple them together while the box is in flatfolded condition.

lVh'en the box is set up for use (Fig. 5) it exposes sinallholes at theends of the bottom a. and the ends of the rear Wall section 0, but inpractice they are so small as not to interfere with the utility of theboxes for many purposes such as containing eggs. The holes in the cornersections 9 are 1nternally covered by the sections 7'.

intermediate sections Having now described our invention, we claim Themethod of making a flat folded box Without the employment of adhesive,consisting in forming holes in such locations of some portions of theblankthat the holes will be in alineinent when the blank is folded, thenfolding, the blank to collapsed condition with other non-aperturedportions thereof located between those portions having holes, and thenutilizing said holes to gain access to the non-apertured portions tounite the latter by non-adhesive fastenlngs.

In testimony whereof We have affixed our signatures.

' LEON E. LA BOMBARD.

MELVIN H. SIDEBOTHAM.

